Nikki Sixx is an American musician, best known as the co-founder, bassist, and primary songwriter of the heavy metal band Mötley Crüe, being the only member to remain throughout their entire history. Prior to forming Mötley Crüe, Sixx was a member of Sister before going on to form London with his Sister bandmate Lizzie Grey. In 2000, he formed side project group 58 with Dave Darling, Steve Gibb and Bucket Baker, issuing one album, Diet for a New America. Also in 2002, he formed the hard rock supergroup Brides of Destruction with L.A. Guns guitarist Tracii Guns. Formed in 2006, initially to record an audio accompaniment to Sixx's autobiography The Heroin Diaries: A Year in the Life of a Shattered Rock Star, his side band Sixx:A.M. featured songwriter, producer, and vocalist James Michael and guitarist DJ Ashba.

L.A. Guns are an American glam metal band from Los Angeles, formed in 1983. The lineup currently consists of Tracii Guns, Phil Lewis, Ace Von Johnson, Johnny Martin, Adam Hamilton and Shawn Duncan. The first incarnation of the group was formed by Tracii Guns and Rob Gardner in 1983 and merged with fellow Los Angeles group Hollywood Rose to form Guns N' Roses in March 1985. After only a brief tenure in that band, Guns reformed L.A. Guns with a new lineup, consisting of Paul Black, Mick Cripps, Robert Stoddard, and Nickey Alexander. Black would soon be replaced by former Girl singer Phil Lewis while former Faster Pussycat bassist Kelly Nickels was added to the group. Later, Alexander would be replaced by former W.A.S.P. drummer Steve Riley with this being known as the "classic lineup" of L.A. Guns. They achieved moderate chart success in the late 1980s and early 1990s. However, the group went through numerous lineup changes and failed to regain mainstream attention.